Feed-water regulator for marine boilers.



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Patented Nov. 26, l90l.

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J. THOMAS. I FEED WATER REGULATOR FOR MARINE BOILERS.

(Application'filed Aug. 10, 1900.)

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No. 687,287. Patented Nov. 26, I90l.

' J. THOMAS.

FEED WATER REGULATOR FOB MARINE BOILERS. [Application filed Aug. 10.1900.) (No Model.) 3 Sheets-Sheet 2.

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No. 687,287. Patented Nov. 26, l90l.

J. THOMAS.

FEED WATER REGULATOR FOR MARINE BOILERS.

Appliation filed Aug. 0, 1900.)

(No Model.) 3 Sheets-Sheet 3.

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Uivrren erases Parents JOSHUA THOMAS, OF CLEVELAND, OHIO.

FEED=VVATER REGULATOR FOR MARINE BOILERS.

formingpart of Letters Patent No. 687,287, dated November 26, 1901.Application filed August 10, 1900. Serial No. 26,480. (No model.)

T0 at whom it may concern: I

Be it known that l, JOSHUA THOMAS, a citizen of the United States ofAmerica, and a residentof the cityof Cleveland, in the county ofOuyahogaand State of Ohio, have invented certain new. and usefulImprovements in Feed-VVater Regulators for Marine Boilers, of which thefollowing is a specification.

This invention relates to feed-Water regnlators and pumpgovernors formarine boilers; and it consists in the adaptation of my feed-waterregulator and pump-governor (for which patents were granted to me asfollows: No. 454,088, dated June 16,1891; No. 488,619, dated December27, 1892, and No. 519,360, dated May 8, 1894) for stationary boilers ofmarine or moving boilers. For this purpose I reconstruct the apparatussubstantially as hereinafter described, and illustrated in theaccompanying drawings, in which- Sheet 1, Figure 1, is a front endelevation of a part of a marine boiler having my improved constructionattached. Fig. 2 is a side elevation of the same. Sheet 2, Fig. 3, is afront elevation of part of two marine boilers, showing the manner ofcoupling up for feeding water to two or more boilers from one pump.Sheet 3, Fig. 4, is a top or plan view of Fig. 3. Fig. 5 is a plan view,partly in section, of the feed-water regulator detached and enlarged inscale. Fig. 6 is a plan view, partly in section, of the pump-governordetached and enlarged in scale.

A in the several views represents a portion of marine boilers. Thefeed-water regulator, one of which is attached to each of the boilers,consists of two copper or other quickly expansible and contractile metalpipes 13 O, which are joined at their ends bycross-heads D and E. Thesepipes are placed on a line with the desired water-level in the boilers,at a little inclination therewith, as seen in Fig. 2, the purpose ofwhich is to allow the water to pass into and out of said pipes as thewater lowers and rises in the boiler. The high ends of said pipes areconnected by pipe F with the top of the boiler for the admission ofsteam, and their lower ends are connected by pipe G with a horizontalpipe G, located on a line parallel with the center line of the boiler,and entered through at its mid-length and thence turned inward the shellof the boiler the boiler, it also terminating at the exact center of theboiler, the purpose being to reach a point where there is the leastchange of position of the water in the boiler. This will serve tomaintain the water-level in the pipes same'as in the boiler.

H is a regulating-valve controlled by the automatic action of the pipesB O. Itissnpported by the cross head I in the frame formed by the pipesB O and the cross-heads D E, near to one end. J is the valve-stem,passing through the cross-head I and extending to the opposite end ofthe frame and is connected to the cross-head D by means of a turnbuckleK. When the water lowers in passes out of the pipes B O and the steamenters them. This causes the I pipes to elongate, thereby opening thevalve and allowing steam to pass to operate the pump, which ceases assoon as the pipes are again filled with water, causing said pipes to Iagain contract. This description applies to the arrangement of thedevice to a single boiler for regulating the admission of steam for theoperations of the pump, the said regulatingvalve being in the steam-linefrom the boiler to the pump, as seen in Figs. 1 and 2.

In order to adapt the device for supplying water to two or more boilersfrom the one pump, I make a transposition of the regulating-valve fromthe steam-line to the line of pipes that convey water to the boilersfrom the pump as follows: P is a pump connected by a steam-line pipe Pdirectly to the pump from one of the boilers. Q is a pipe leading fromthe pump to a pipe Q overhead for supplying all the boilers. Betweensteam-pipe P and the water-pipe Q is interposed my pump-governor O forregnlating'the valve V in the steam-pipe P to the pump. This governorwas the subject ofmyPatent No. 519,360 of May 8, 1894. From the mainwater-supply pipe Q, branch pipes R R lead, respectively, to theboilers. Said pipes R R are connected by branch pipes S S with theregulating valves of their respective boilers. In the pipes R R areprovided stop-cocks r r between the said branches S S, and the saidbranches S S are also provided with stopcocks s s, the purpose being toshut ofi the direct passage of water through said Ipipes R R and divertit through the said regulatin g-valves, and vice versa,when operation ofthis arrangement of the device is as follows: Should the water fallbelow the required level in a boiler, the water also vacates the pipes BO boiler and the steam takes its place. This causes said pipes to expandor elongate. This opens the valve in that regulator, so that water maybe supplied to that boiler. Now as the water has lowered in said boilerthe pressure of the water on the valve V in the governor O is alsodecreased. Then the pressure of the steam on valve E, aided by thespring S, will open said valve E and supply steam to operate the pump.By this means the pump is made to supply water to either of the boilersas occasion requires.

Having described my invention, what I claim is- 1. In a feed-waterregulator for steam-boilers, the combination with the boiler and theregulator connected therewith, consisting of pipes 13 O connected attheir ends, and supported on the outside of the boiler on a littleinclination with the water-level in the boiler, their upper endsconnected to the steam-dome, and a valve attached to and operated by theexpansive and contractile functions of said pipes; of a horizontal pipeconnected with the lower ends of said pipes B O, and on a line with theexact center of the boiler and desired. The

of the regulator on suchterminating inside of the boiler at the exactcenter midway of its length, arranged to operate substantially asdescribed and for the purpose specified.

2. In a feed-water regulator for steam-boilers, the combination with theboiler and the regulator connected therewith, consisting of pipes B 0connected at their ends, and supported on the outside of the boiler on alittle inclination with the water-level in the boiler, the upper endsconnected with the steamdome, and a valve attached to and operated bythe expansive and contractile functions of said pipes; of a horizontalpipe connected with the lower ends of said pipes B O, and on a line withthe exact center of the boiler and terminating inside of the boiler atthe exact center midway of its length, and a pump, a governor connectedbetween the steam and water discharge pipes of the pump, thedischarge-pipe connected with the valve in the regulator, all arrangedto operate substantially as described and for the purpose specified. V

Signed by me at Cleveland, Ohio, this 8th day of August, 1900.

JOSHUA THOMAS.

\Vitnesses:

GEO. W. TIBBITTS, CHARLES L. S'rocKER.

